Natural Gas Genetic Type and Accumulation Characteristics in Erboliang III Structure in North Margin of Qaidam Basin

›› 2014, Vol. 35 ›› Issue (1): 1-1.

Natural Gas Genetic Type and Accumulation Characteristics in Erboliang III Structure in North Margin of Qaidam Basin

TANG Guomin1a,1b, LUO Qun1c, PANG Xiongqi1a,1b, ZHANG Yongshu2, GUO Jigang1a,1b, SHEN Weibing1a,1b, GUO Yingchun1a,1b

(1. China University of Petroleum, a.State Key Laboratory of Petroleum Resources and Prospecting, b. College of Geosciences, c. Unconventional Gas Research Institute, China University of Petroleum, Beijing 102249, China; 2. Research Institute of Exploration and Development of Qinghai Oilfield Company, PetroChina, Dunhuang, Gansu 736200, China)

Online:2019-01-01 Published:1905-07-10

Abstract

Abstract: Use the existing wells data, this paper systematically analyzed the natural gas genetic type and accumulation characteristics in the Erboliang III structure based on the analysis of the characteristics of Ca, He and Ar isotopes analysis, integrated with the hydrocarbon source rock evolution, structural development and natural gas accumulation history. The results show that the nature gas in Erboliang III structure is typically coal?related gas. The reverse sequence phenomenon of methane and ethane in the gas reservoir is resulted from mixed natural gas with different maturity in the process of gas accumulation. The natural gas mainly came from the deep over?matured Jurassic hydrocarbon source rocks. The faulting activities play an important role in controlling the formation and evolution of the nature gas reservoir. The natural gas accumulation model could be described as the up?source accumulation model for the fault?Transport layer type

CLC Number:

TE112.1

TANG Guomin1a,1b, LUO Qun1c, PANG Xiongqi1a,1b, ZHANG Yongshu2, GUO Jigang1a,1b, SHEN Weibing1a,1b, GUO Yingchun1a,1b. Natural Gas Genetic Type and Accumulation Characteristics in Erboliang III Structure in North Margin of Qaidam Basin[J]. , 2014, 35(1): 1-1.

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Natural Gas Genetic Type and Accumulation Characteristics in Erboliang III Structure in North Margin of Qaidam Basin

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